using System;

/*
 * Copyright 2002 Paulo Soares
 *
 * The contents of this file are subject to the Mozilla Public License Version 1.1
 * (the "License"); you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the License.
 *
 * The Original Code is 'iText, a free JAVA-PDF library'.
 *
 * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
 * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
 * All Rights Reserved.
 * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
 * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
 *
 * Contributor(s): all the names of the contributors are added in the source code
 * where applicable.
 *
 * Alternatively, the contents of this file may be used under the terms of the
 * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
 * provisions of LGPL are applicable instead of those above.  If you wish to
 * allow use of your version of this file only under the terms of the LGPL
 * License and not to allow others to use your version of this file under
 * the MPL, indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by the LGPL.
 * If you do not delete the provisions above, a recipient may use your version
 * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the MPL as stated above or under the terms of the GNU
 * Library General Public License as published by the Free Software Foundation;
 * either version 2 of the License, or any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
 * details.
 *
 * If you didn't download this code from the following link, you should check if
 * you aren't using an obsolete version:
 * http://www.lowagie.com/iText/
 */
namespace iTextSharp.text.pdf {

    /** Implements the shading pattern dictionary.
     *
     * @author Paulo Soares (psoares@consiste.pt)
     */
    public class PdfShadingPattern : PdfDictionary {

        protected PdfShading shading;
    
        protected PdfWriter writer;
    
        protected float[] matrix = {1, 0, 0, 1, 0, 0};
    
        protected PdfName patternName;

        protected PdfIndirectReference patternReference;

        /** Creates new PdfShadingPattern */
        public PdfShadingPattern(PdfShading shading) {
            writer = shading.Writer;
            Put(PdfName.PATTERNTYPE, new PdfNumber(2));
            this.shading = shading;
        }
        
        internal PdfName PatternName {
            get {
                return patternName;
            }
        }

        internal PdfName ShadingName {
            get {
                return shading.ShadingName;
            }
        }
    
        internal PdfIndirectReference PatternReference {
            get {
                if (patternReference == null)
                    patternReference = writer.PdfIndirectReference;
                return patternReference;
            }
        }
    
        internal PdfIndirectReference ShadingReference {
            get {
                return shading.ShadingReference;
            }
        }
    
        internal int Name {
            set {
                patternName = new PdfName("P" + value);
            }
        }
    
        internal void AddToBody() {
            Put(PdfName.SHADING, ShadingReference);
            Put(PdfName.MATRIX, new PdfArray(matrix));
            writer.AddToBody(this, PatternReference);
        }
    
        public float[] Matrix {
            get {
                return matrix;
            }

            set {
                if (value.Length != 6)
                    throw new Exception("The matrix size must be 6.");
                this.matrix = value;
            }
        }
    
        public PdfShading Shading {
            get {
                return shading;
            }
        }
    
        internal ColorDetails ColorDetails {
            get {
                return shading.ColorDetails;
            }
        }

    }
}